Fardous, M. R., Nasrin, M. S., Shakil, M. E., Islam, M. S., Hoque, M. A. and Islam, M. N. (2020) “Cow Urine for Enhancement of Biogas Production and Fertilizer Quality of Biogas Slurry”, Journal of Scientific Research, 12(1), pp. 135–144. doi: 10.3329/jsr.v12i1.43031.